147 entries under unknown topic. ×

13
indeterminate(adjective, rough, uncertain, doubtful, unsettled)
13
indistinguishable(adjective, vague, unclear, hazy)
13
unsung(adjective, strange, unfamiliar, indefinite)
12
unintelligible(adjective, hard, rough, difficult, solid)
12
ill-defined(adjective, weak, rough, dark, uncertain)
11
blind(verb, adjective, dull, close, cover)
11
equivocal(adjective, cover, clear, rough, difficult)
11
secluded(adjective, dark, near, distant, remote)
11
undefined(adjective, rough, uncertain, doubtful, dim)
11
unfamiliar(adjective, strange, new, different)
11
unimportant(adjective, mean, simple, lower, poor)
10
covered(adjective, remote, secret, hidden)
10
dubious(adjective, rough, uncertain, unreasonable, doubtful)
10
uncertain(adjective, clear, rough, difficult, dark)
9
anonymous(adjective, strange, indefinite, unidentified)
9
devious(adjective, humble, distant, minor, remote)
9
imprecise(adjective, rough, vague, unclear)
9
little known(expression, idiom, strange, new, complex)
9
out-of-the-way(adjective, near, distant, remote)
9
retired(adjective, quiet, remote, isolated)
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APASmart Define. (2016). obscure thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/obscure/thesaurus/synonyms
ChicagoSmart Define. 2016. "obscure thesaurus" https://smartdefine.org/obscure/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, obscure thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/obscure/thesaurus/synonyms>.
MLASmart Define. "obscure thesaurus" 29 March 2016. Web. 25 September 2026. <https://smartdefine.org/obscure/thesaurus/synonyms>